Two-cycle valveless internal-combustion engine.



D. CBYSSC,

TWO-CYCLE VALVELESS INTERNAL JOQ'BUSTN ENGINE.

Ammonium FILED F2327, 191s.

there work resiiectively the pistons 9, l0.

liarh motor cylinder such as M'J ,is'pxov longed in the lorm oi a compressing cylinv der such as t? in the interior of which wort-:s a piston. 11 that is connected to the end ol' the connecting rod of the respective motor element. The pistons 9, 10 are fixed to the bottom of the piston 11 in such a manner that the compressing piston' in its movement, forms the guide for the small pistons 9, 10 of the corresponding motor element. In practice, it is preferred to malte the .compressing cylinders C1, C, Ca olf diameters slightly larger than twice the diameters oi the cylinders 6, 7 of the correspon ing motor element. The cylinder is pro 'ded near its lower end with apertures 12 opening into a tubular member 13 which serves for the admission of the explosive mixture and conununicates with one of-the ports of the collecting and distributing. device as hereinafter escribed. The cylinder 7 is provided near its lower end with apertures 14 opening into a tubular member l5 which serves for' tl'ie exhaust of the burnt ases.

ample, the piston 1() of the cylinder 7 uncoiers the exhaust apertures 14` slightly beitre the admission apertures 12 are uncovered by the piston 9 of the cylinder 6. The object of this arrangement is hereinafter described; l

lis the 'collecting and distributing device for cli'ecting a suitable connnunication 1oetween the compressing cylinders and the motor cylinders, and is connected to the arlmr. t n through the medium of a'special tubular member 17 and a rotary valve 18. TluI general arrangement of these elements is ai; follows: 'lhe gaseous 'mixture supplied by the carburetor is delivered into the tubularfmcmber 17 through a suitable duct'suitably connected tothe orifice 19 which communicatcs with a circular passage 20 pro- I vided in the interior of the tubularaneml'ier 17. The latter has further three apertures al, a, a which are arranged concentrically to the shaft 1 andcommunicate with suitable ,ducts c2c, c that open respectively intov the apertures d1, d2, d of the ducts e1, c, of the collecting and distributing device'l. i 1

The rotary valve 18 is formed with a circular passage 21., the length of which is eqt'al to about l of theA circumference of the slide. This passage thus places each o f the apertures al, of, a successively inr communicationwith the circular passage 20 that receives the explosive mixture.

The internal ducts or passages of the collecting and distributing device 16 are arranged as follows; rl`he passage e passes in trent ol the admission ports of the lefthand cylinder vof the motor elementlVl1 with which it communicates through the openingsl f1; then it passes around the passages c'', c" on its way to the admission ports ci the compresffing cyli lers (la with which it connnunicates througn thev opening y. The passage c2 )asses in front of the admission ports o1I the compressing cylinder C1 with which it communicates through an opening g1, and thence it passes to the ddmission ports ol the left-hand cylinder of the motor element M2 with which it communicates through the opening f2. The passagesJ passes in front of the znlmission ports of the compressing cylinder C2 withy -whicli it communicates through the open' ing g2, and then it passes to the admission ports of the left-hand cylinder of the motor Velement M with which it communicates through the opening f3,

The arrows k1, fr, ha indicate the severa 'paths traversed by the explosive mixture through the various passages of the collecting and distributing device 1G. rangement enables the fresh gases to be A forced into the motor elements M1, M2, M'o 'It is to ne noted that as shown 1n. the ex-.

respectively by means of the compressing cylinders C, C1, C2.'

The operation ol the improved apparatus is as follows:'When the rotary valve 18 occupies theposition shown in the drawings, it places the carburetor in communication with the passage cf and consequently with lthe passage-c2 ofv the collecting and distributing device. At this moment the piston oli the compressing cylinder C is making its downstroke l(the shaft 1 being assumed to rotate in a direction of' the arrow z' in Fig. 2) so that the cylinder of this c0111-,

.off comn'iunication between the passage c and the carl'iureter. This compression'is eiectedin the said pass ge and in the cylinder C1 until the moment when the-piston 9 of the motor element M2 uncovers the eorresponding admission ports 1Q, namely, when thesaid piston reaches the bottom This arend of its stroke, The fresh gases are thus compressed through the cylinders G and 7 marines during the whole time that thc ports 12 remain open, that is to say, while the crank m2 is traversing the lower arc o: of its course, and the coml'ircssing piston C1 continues to drive thc gases into the cylinders of the element M, while the crank m1 is traversing the arc ,t of its course (Fig. 2). The same operation is repeated for eachof the motor groups of the improved motor apparatus, and need not scribed herein. n

Fionihig. l it will be clearly seen that the exhaust ports 14: of the cylinder 7 of each element are uncovered by the corresponding piston l() a little time before the admission ports 12 ol. the cylinder (l of this said element are uncovered by the piston 9. The result of this arrangement is that at the moment when the compressing-piston of the cylinder (l2, for instance is about to compress the fresh gases into the cylinders of the motorelement Mi", there is already produced inthe cylinders 6 and .Y of the said element/j an expulsion of the burnt gases in -the sense indicated by the arrow j in Fig. l.

Consequently the expulsion of the burnt gases and the filling of the motor cylinders with. fresh gases must take place with certainty, and when the two pistons and l0 of each motor element move upward simul.

taneously, they will compress fresh pure gases which are not mixed with the residues of burnt gases, for the purpose ot providing explosive mixture at the moment of the explosion. Y

What claim is l. A valvcless internalcombustion motor workingr on the two stroke cycle constituted by means of a plurality of combined elements comprising respectively a motor cylinder divided into two parallel cylindrical chan'ibrs, 'a piston mo\ able in each of said chambers, admission ports and'exhaust ports located respectively in the lower parts of the cylindrical chambers of the motor cylinder', a passage located at the upper part of said cylinder for vestablishing; free communication between its two cylindrical chambers, a comliressing cylinder located below the double-chamber-ed motor cylinder, a piston movable in the said compressing cylinder upon which are fixed the two pistons of the motor cylinder superposed on it, a motor shaft having as many cranks as the motor includes wmpressing cylinders; connecting rods respectively articulated at .their lower end on the correspomling crank ot' the motor shaft. and at theiil upper end on the piston of' the compressing cylinder corresponding; to the said crank, a carbureter supplying the .erqilosive mixture to the motor, suitable conduits insuring. on the one hand, the illing;

ot' the compressing cylinders with the explosive mixture supplied by the carbureter, and,

be more fully ele-- on the other hand, the forcing of the said mixture into thcmotorcylinders, correspond ing respectively to the said compressing cylinders, and means for establishing and breaking at the proper time the communication between each of thecompressing cylinders and the sai-d carburetor.

2. A val\'eless internal combustion motor working on the two stroke cycle, comprising a plurality ot' elements combined together,

each comprising a motor cylinder dividcd4 75 into two parallel cylindrical chambers, a piston movable in each of said chambers, admission ports and exhaust ports located respectively at the lower parts of the two cylindrical chambers of the motor cylinder, the conformation of said ports and said pistons being such that the exhaust ports are uncovered at the end of the stroke of the corresponding piston a little before the con- -on the piston of the compressing cylinder lcoriespwiding to the said crank, a carburetor supplying' explosive nmixture to the motor, suitable conduits insuring, on the one handl` the filling of the compressing cylinders with the exphwsive mixture supplied by the carbnreter, and, on the other hand, the Yforcing ot the said mixture into the motor cylinders, correspondingr respectively to the said compressing cylinders, and means for making and,breaking at the .proper times the ranmnunication between each of the compressing cylinders and tlidsaid (aublueter.

il. A valveless internal combustion motor working on the two stroke cycle, consisting?,r oll the combination of a plurality of conjugated elements comprising respecti vely a motor cylinder divided into two parallel cylindrical chambers, a piston movable in eachl ol said cliamlnirs. admission ports and exhaust ports located respectively in the lower parts ol' the two cylii'idrical. chambers ol` the niotor cylinder, a passage locatedat the upper part of said cylinder establishing free communication between the two cylindrical chambers thereof, n compressing cylinder located below the double chambered motor cylinder, a 4piston movable in the said compressing c vl- 4inder upon which are fixed thex two pistons er" the meter cylinder superpose-d thereon, a

motor shaft having as many cranks as the motor includes compressing cylinders; connecting rods respectively articulated at their lower end on the corresponding 'crank of the motor shaft, andat their upper end on the piston of' the compressing cylinder correspfmtling'to thesaid crank, a, carburetor supplying explosive mixture to the motor, a collecting and-distrilmting device comprisi'ng internal passages connecting the admis sion liiorts for the explosive niiiturein each of the motor cylinders to the ports ol the corresponding compressing cylinder, a tubulai' inenlber comprising as niany` internal assages as there are passag s in said. collect- 111g and distributing device, and incarna lor placing successiiioly at the proper times each of the passages ot said tubular nien'lher in communication with said carlnircter.

4. Ar` valveless internal conihustion inoto'r Working on the tivo stroke cycle, consisting of the combination of a plurality of elements comprising respectircl y a motor cyl indcr divided into `two parallel. cylindrical chambers, a piston movable in each ot said chambers, admission ports and exhaust -ports located respectively in the lower paris of the tiro cylindi" :ai iizliaiiibers olf the-ind tor cylinder, a pas? fc located iu the uji'A part of said cylind r, establishing i muniation between the two cylindrical vchambers in said cylinder, a compressing.

cylinder' located below the double charnbered motor cylinder, a piston movable in said corui'n'essing cylinder upon which are .fixed the tiro pistons of tlie motor cylinder superposed thereon, a motor shaft having as .n'iany cranks as theniotor includes compressing cylinders; connecting rodsrespec ti rely articulated at their lower end on the corresponding crank of the motor shaft, and at their upper end on the piston oil thc cornpressing cylinder corresponding to the said crank, a carburetor supplying the explosive mixture to the motor, a collecting and distributing device comprising internal passages connecting the admission orifices lor the explosive mixture in each ol the motor cylinders to the suction and delivery ori liccs ol.z the corresponding compressing cylinder', a tubular member' comprising many internal passages as there are passages in said collecting and distributing `de.vice,`a

circular assage in the interior of said tubular mem er in constant coinnnuiication with the duct supplying explosive inixturc from said carburetor, a rotary valve mounted on the motor shaft comprising a partly cireu lar passage corresoonding to the circular passage ot' said tubular member, apertures in said tubular member communicating resiiectivelv with each of the ducts corresponding with the internal passages of the collecting and distributing device, located in.

, sages as there are passages in l passage ot the rotary i aire, the various valve shuts ofi' this communication the path followed by scid partly ci message ol the rotarywalve, whereby ol? said-passages is placed success' vely at tl proper time in coininuniczitioii with, th carburetor. Q

A vali'eless internal combustion inov tor norkilig on the two sti-olie cycle, cour nrising the combination ol a plural et reniugated elements conniririug i tively a motor :ylinder tliiiiflefI 'inl- `parallel cylindrical chai. irs, a able in each of' said chainb morts and exhaust ports located in the lower t chainlgzeis ol. t locz'ited in the upper i tahlisliing :tree ccninn two cylindrical chambers. presingij cylinder located beliiiw the d chainbei'ed .motor cylinder, a'fp'isten muraille in said compressing cyiiiiuler upon 'which are fixed the two pistons of the motor cylinder superposed tiaereon, jointed at one end tu i the motor shaft au( i olf' the suction and delii respond in g comp rusein g nieniber comprising as inany and distributing device-l, a ,:ircular ila Y. in the interior of said tubula' ineinber iir constant cominunicatioii with the duet sur plying explosive .mixture from said car bureter, a rotary valve mounted on the niotor shaft comprising a. V[mrtly circular pas lea .sage corresponding to the circular ua f of said tubular i'ueinber, apertures for in the said tubular ineml'ier communicating respectively with each of the ducts corre spending with the internal j|iiassagiles oli collecting and distributing devi i loc the patlr followed by said nelJ if il ,i tfiiments constituting the motor being ai ranged. relatively torone another-and coinhined with one another in such a manner that the admission of the fresh explosive mixture is effected in each of the compressing cylinders by the suction produced by the downstrolce of the corresl'ionding piston at the moment when the rotary valve mounted on the motor-shaft establishes communication by means of the distributing tubular member between said earbureter and the passage of the collecting and distriliuiting device corresponding to the last mentioned compressing cylinder, while the said ro 

